Mobile phones and in-vehicle technology
The Highway Code applies to England, Scotland and Wales and is essential reading for everyone.
You MUST exercise proper control of your vehicle at all times. You MUST NOT use a hand-held mobile phone, or similar device, when driving or when supervising a learner driver, except to call 999 or 112 in a genuine emergency when it is unsafe or impractical to stop. Never use a hand-held microphone when driving. Using hands-free equipment is also likely to distract your attention from the road. It is far safer not to use any telephone while you are driving or riding – find a safe place to stop first or use the voicemail facility and listen to messages later.